you guys are probably going to laugh at me but...

im at the point where insurance, fuel and upkeep are becoming too much to handle, i love to go for rides, just to get out of the house.
i have 2 dogs, a beagle shepherd mix 70lbs and a mastiff 140lbs.
needless to say they love bye byes lol
ive discovered motored bikes and im thinking of building a trailer so i can ride around my block.

ive got a couple of blueprints and a couple of links to the main parts im going to buy.

I think the biggest problem is its width. I think it would slow traffic. You would be pulling A LOT of weight that would slow down the best of the motor kits. Can you narrow it to 2 1/2' to 3'? Have you though of using 2 of these type of rigs in line? http://www.bluerim.com/in-12-qe125.html
Your only crazy about you dogs. Have 70 lb. chow/rot.
GOOD LUCK!!

I have 3 dogs: a 25lb beagle, a 40lb shepherd mix, and a 175lb english mastiff. I was also contemplating building a trailer for my dogs to join me on my rides. It'd definitely have to be a sturdy one for the mastiff, thats for sure.

I laugh thinking about how funny it would look to see my mastiff sitting on the trailer enjoying a ride down the street.

What about a tricycle design? two wheels in the back & a steerable one in the front to distribute the load & allow turning. Build it kinda like a low-boy style bicycle trike so that the pooch's weight will be down low. With the big wheels, it would have minimal drag. The frotn wheel would tie to your rear wheel and just follow wherever your bike goes.

Put the front wheel on a swivel, like an over-sized swivel castor, or use the front fork/wheel from a 10-12 inch child's bike. That way, you could keep the 'T' shaped wheel alignment, have weight bearing support on the front, but have a rigid tongue, which will track much better than a wagon at 20 MPH. It's also easier to back up. I would go no wider than 3 feet outside dimensions on the rear wheels (30 inches would be better,) and use 20 to 26 inch bike wheels for the two rear wheels. In addition, have the floor of the trailer below the axles of the rear wheels - maybe 6 inches ground clearance or so. This will make the trailer much more stable.

I know that if I hooked my English mastiff up to one of those, I wouldn't be going anywhere very quickly, as my dog would plop down on the ground and go to sleep. In a given day of mastiff-powered travel, I'd reckon to guess that I would spend mabye 15-20 minutes actually going anywhere.. and those few minutes would only be when a doorbell is heard or a cat passes in front of the path.

One thing I would warn about with trying to make bicycle wagons out of "utility" wagons--is that many times, the utility wagon wheels do not have very good bearings in them, and it may not be easy to put any better bearings in yourself. When the wheels are spun fast they tend to "rattle" on the loose bearings.
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